This startup Questli is giving away free iPhone 4 cases made by Graft Concepts. (as well as other prizes on their website such as ipads and macs but this is an iPhone forum 
)
There is no catch, just need to download thier APP, Questli (itunes download link)
You will need the invite code "TC2011" from the Tech Crunch Article released today showing how the app was just officially launched, and these prizes are part of the promotion!
INSTRUCTIONS FOR THEIR BLOG POST:
How do you win?
- You will need to download the Questli App: Available on iTunes Now!
- You will need the special code from Tech Crunch to make an account (TC2011)
- Answer some questions about the company via the Quest.
- Be the first one to complete the Quest and you will win one of these cases completely free!
One OTHER WAY to WIN!
- Go to their Facebook page, like it, and leave a comment under the Facebook ”Graft Leverage Giveaway” post for your chance to be put into a random drawing to win a Graft Leverage case!